“David Klinger, author of a book on the subject titled “Into the Kill Zone,” said there is no nationwide data, but officers who shoot subjects while on duty are prosecuted less than 2 percent of the time, and most of those wind up being acquitted.”

“Chandler Officer Dan Lovelace responded to a report of a woman accused of trying to fill a phony prescription at a pharmacy drive-through. When the woman accelerated in her car, Lovelace fired, killing her.”

“Phoenix also has seen controversy in the past, including a series of police homicides that prompted public demonstrations. In 1994, a man with no legs named Edward Mallet died in custody when he was placed in a choke hold.”

“Officers were cleared by internal investigations, but the city lost a wrongful-death suit and wound up paying $5.3 million. One year later, a deranged suspect died in a hail of gunfire – hit by 30 rounds from numerous Phoenix officers. Finally, in 1996, a 16-year-old boy was shot 25 times after he brandished a butcher knife. No officer was charged in any of the slayings.”

“Oakland transit Officer Johannes Mehserle, was charged with murder after video evidence showed him shooting Oscar J. Grant III in the back as the suspect lay on the ground. In July, after Mehserle claimed he pulled out his firearm thinking it was a Taser, jurors found him guilty of involuntary manslaughter.”